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| function frame3d(swind,amin,amax,astep,qstep,qs,... | ||
| fxlong,fxlat,xlong,xlat,zsf,fgrnhfx,uf,vf,u,v,w,ph,phb,hgt) | ||
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| clf,hold off | ||
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| r = size(fxlong)./(size(xlong)+1); % refinement ratio | ||
| ideal = all(xlong ==0); % not populated in ideal case | ||
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| if ideal, | ||
| % do not have xlong and xlat in ideal case, but we made the coordinates up | ||
| % for fxlong and fxlat, so interpolate | ||
| n=size(xlong); | ||
| [xa,ya]=ndgrid(r(1)*[1/2:1:n(1)],r(2)*[1/2:1:n(2)]); % centers of atm cells in fire grid | ||
| axlong = interp2(fxlong,xa,ya); % fake coordinates for display | ||
| axlat = interp2(fxlat,xa,ya); % fake coordinates for display | ||
| xscale=1; | ||
| yscale=1; | ||
| else | ||
| axlong=xlong; axlat=xlat; % in real case, xlong xlat populated | ||
| er=6378e3; % earth radius in m | ||
| deg2rad=2*pi/360; % 1 degree in radians | ||
| % degrees to meters, long and lat | ||
| lat_deg2m=er*deg2rad; | ||
| long_deg2m=er*deg2rad*cos(deg2rad*mean(xlat(find(xlat)))); | ||
| xscale=1/long_deg2m; | ||
| yscale=1/lat_deg2m; | ||
| end | ||
| aspect_ratio = [xscale yscale 1]; | ||
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| % compute the corresponding part of the fire grid | ||
| dmin=1+r.*(amin(1:2)-1); | ||
| dmax=r.*amax(1:2); | ||
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| % surface colored by heat flux | ||
| i=dmin(1):dmax(1);j=dmin(2):dmax(2); | ||
| hs=surf(fxlong(i,j),fxlat(i,j),zsf(i,j),fgrnhfx(i,j),'EdgeColor','none','FaceAlpha',0.7); | ||
| caxis([0,1e6]); % for heat flux color | ||
| axis tight, colorbar | ||
| hold on | ||
| [c,hc]=contour3(fxlong(i,j),fxlat(i,j),zsf(i,j)); | ||
| for h=hc(:)', set(h,'EdgeColor','black');end % color the contours black | ||
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| % surface wind arrows | ||
| if swind, | ||
| ii=dmin(1):qstep(1):dmax(1);jj=dmin(2):qstep(2):dmax(2); | ||
| hq=quiver3(fxlong(ii,jj),fxlat(ii,jj),zsf(ii,jj),xscale*uf(ii,jj),yscale*vf(ii,jj),zeros(size(vf(ii,jj))),qs); | ||
| set(hq,'Color','black') | ||
| end | ||
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| % geopotential altitude of the centers of lower cell face | ||
| % ph is perturbation from the background phb | ||
| % note ph and phb are staggered just as w | ||
| a = (ph+phb)/9.81; | ||
| % check if the lowest background geopotential height is terrain height | ||
| err_hgt = big(hgt-phb(:,:,1)/9.81) | ||
| % interpolate the geopotential and w velocity from staggered grid to cell centers | ||
| ac = (a(:,:,1:end-1)+a(:,:,2:end))/2; | ||
| wc = (w(:,:,1:end-1)+w(:,:,2:end))/2; | ||
| % interpolate u and v components of wind velocity from staggered grid to cell centers | ||
| uc = (u(1:end-1,:,:)+u(2:end,:,:))/2; % from front and rear face to the center | ||
| vc = (v(:,1:end-1,:)+v(:,2:end,:))/2; % from front and rear face to the center | ||
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| % atmosphere wind arrows | ||
| ia=amin(1):astep(1):amax(1); | ||
| ja=amin(2):astep(2):amax(2); | ||
| colors={'white','red','green','blue','black'}; | ||
| for k=amin(3):astep(3):amax(3), | ||
| q1=u(ia,ja,k)*xscale; | ||
| q2=v(ia,ja,k)*yscale; | ||
| q3=w(ia,ja,k); | ||
| hqa=quiver3(axlong(ia,ja),axlat(ia,ja),ac(ia,ja,k),q1,q2,q3,qs); | ||
| set(gca,'DataAspectRatio',[xscale yscale 1]); | ||
| i=1+mod(k-1,length(colors)); | ||
| set(hqa,'Color',colors{i}); | ||
| end | ||
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| if ideal | ||
| xlabel('x (m)') | ||
| ylabel('y (m)') | ||
| else | ||
| % set(gca,'PlotBoxAspectRatioMode','auto'); | ||
| xlabel('longitude (deg)') | ||
| ylabel('latitutude (deg)') | ||
| end | ||
| zlabel('z (m)') | ||
| set(gca,'DataAspectRatio',[xscale yscale 1]); | ||
| hold off | ||
| drawnow | ||
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| end |
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| disp('1. install mexnc under the same directory as wrf-fire, then') | ||
| disp('2. start matlab in wrf/WRFV3/test/em_fire to set up the paths properly') | ||
| disp(' or cd there and run startup while in the directory') | ||
| disp('3. read a wrfrst file into the workspace as in') | ||
| disp(' >> ncload wrfrst_d01_0001-01-01_00:01:00') | ||
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| % note the variables are read here without the WRF permutation of dimensions | ||
| ideal=1; | ||
| rst=1; | ||
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| if rst, | ||
| u=u_2; | ||
| v=v_2; | ||
| w=w_2; | ||
| ph = ph_2; | ||
| end | ||
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| clf | ||
| amin=[15,15,1]; % the atm grid part to show | ||
| amax=[30,30,2]; | ||
| amin=[1,1,1]; % the atm grid part to show | ||
| amax=[41,41,2]; | ||
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| qstep=[5,5]; % quiver step for wind on the surface fire grid | ||
| astep=[1,1,1]; % quiver step for wind on the atmosphere grid | ||
| qs=1.5; % scaling for quiver arrows | ||
| r=[10,10]; % refinement factor | ||
| swind=1; % plot surface wind | ||
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| %------------------------------------------------- | ||
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| frame3d(swind,amin,amax,astep,qstep,qs,... | ||
| fxlong,fxlat,xlong,xlat,zsf,fgrnhfx,uf,vf,u,v,w,ph,phb,hgt) |
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| % function wrfout2frame3d(file,steps) | ||
| disp('1. file=''wrfout file''') | ||
| disp('2. steps=[1:20] % time steps to display') | ||
| disp('3. wrfout2frame3d') | ||
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| fxlong =ncread(file,'FXLONG'); | ||
| fxlat =ncread(file,'FXLAT'); | ||
| xlong =ncread(file,'XLONG'); | ||
| xlat =ncread(file,'XLAT'); | ||
| zsf =ncread(file,'ZSF'); | ||
| fgrnhfx=ncread(file,'FGRNHFX'); | ||
| uf =ncread(file,'UF'); | ||
| vf =ncread(file,'VF'); | ||
| u =ncread(file,'U'); | ||
| v =ncread(file,'V'); | ||
| w =ncread(file,'W'); | ||
| ph =ncread(file,'PH'); | ||
| phb =ncread(file,'PHB'); | ||
| hgt =ncread(file,'HGT'); | ||
| itimestep=ncread(file,'ITIMESTEP'); | ||
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| % note the variables are read here without the WRF permutation of dimensions | ||
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| amin=[15,15,1]; % the atm grid part to show | ||
| amax=[30,30,2]; | ||
| amin=[10,10,1]; % the atm grid part to show | ||
| amax=[30,30,1]; | ||
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| qstep=[20,20]; % quiver step for wind on the surface fire grid | ||
| astep=[2,2,1]; % quiver step for wind on the atmosphere grid | ||
| qs=1e-3; % scaling for quiver arrows | ||
| swind=0; % do not display surface wind | ||
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| %------------------------------------------------- | ||
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| a=avifile('fire.avi'); | ||
| for k=steps, | ||
| frame3d(swind,amin,amax,astep,qstep,qs,... | ||
| fxlong(:,:,k),fxlat(:,:,k),xlong(:,:,k),xlat(:,:,k),... | ||
| zsf(:,:,k),fgrnhfx(:,:,k),uf(:,:,k),vf(:,:,k),... | ||
| u(:,:,:,k),v(:,:,:,k),w(:,:,:,k),... | ||
| ph(:,:,:,k),phb(:,:,:,k),hgt(:,:,k)) | ||
| title(['Timestep ',num2str(itimestep(k))]) | ||
| F=getframe(gcf); | ||
| a=addframe(a,F); | ||
| end | ||
| a=close(a); |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1 @@ | ||
| ../ideal.exe |
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